Device for knitting upon transferred fabric sections.



R. WI SCOTT. DEVICE FOR KNITTING UPON TRANSFERRED FABRIC SECTIONS.-

APPLICATION'fILEDJULY N. IE HS Patented Sept. 11, 1917.

2 .F e w Law? UNITED STATES PATENT OFFIQE.

ROBERT W. SCOTT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO SCOTT & WILLIAMS,

INCORPORATED, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHU-SETTS.

DEVICE FOR KNITTING UPON TRANSFEBRED FABRIC SECTION-S.

Original application filed December 18, 1913, Serial No; 807,535.

To all whom it may concern:

Be it known that I, Ronnn'r IV. Soo'r'r, a citizen of the United States,and resident of Boston, in the county of Suffolk and State ofMassachusetts, have invented new and useful Improvements in Devices forKnitting upon Transferred Fabric Sections, of which the following is aspecification.

My invention relates to devicesadapted for use with knitting machinesused for knitting upon transferred fabric sections.

In machines of the class indicated, while the operation of the machinedevices is usually automatic, hand operations are required at thebeginning of knitting. One object of my present device is 'to enablebeginning operation of the knitting devices without interference by theoperator with the knitting instruments.

In the accompanying drawings,

Figure 1 is a vertical central cross section of the upper part of .amachine equipped with my device.

Fig. 2 is a plan view of the devices shown in Fig. 1.

Fig. 3 is an enlarged diagram plan at the knitting point.

In machines of the class to which my device is particularly applicable,when a previous operation has been completed, the machine stops, theneedles being bare, and the machine is then prepared for a new operationby manually transferring to the needles the loops of a previously knitsection of fabric such as a rib top.

I11 order to perform the transfer operation, it is desirable to bringthe needles to a level, prior to the application of the transferredsection of fabric. hen the knitting begins, it is obvious that themovement then will be initiated at some particular part of the series ofneedles, that part of the series precedingsaid part remaining level, andin the usual case elevated.

In my application, Serial Number 807,535, filed December 18, 1918,(Letters Patent No. 1,150,517, dated August 17, 1915) of which thisapplication is a division, I have eX- plained the operation of a machinefor automatically ending the production of one article, leveling theneedles, and stopping, and for thereafter beginning 'to knit, after thetransfer has been made and after the new Specification of LettersPatent.

Patented Sept. 11, 1917.

Divided and this application filed July Serial No. 89,889.

chine has been started to produce another article, the operationincluding the automatic entrance of the operating cams into contact withthe needles which they move. and the simultaneous or previous entranceof a knitting yarn into relation with the needles. Assuming the usualarrangement for stocking knitting of a circle of needles, half of whichhave long butts and half of which have short butts, the operation of theneedles to knit conveniently begins at the longbutt needle leading itsseries in the direction of relative approach of the needles and thestitch cams. It has heretofore been customary, when beginning to knitupon needles which have been supplied with a previously knit fabricsection while level, and thereafter operated to begin to knit at aparticular point, to depress or otherwise position the needles by handto secure the certain taking of the new yarn for a new course of loopsby the first needle to be actuwhich onsumes time, I now provide devicescoaoting with the needles first operated to knit to insure taking theyarn into their hooks, and for thereafter permitting normal operation ofthe needles. Preferred devices for this purpose comprise means formoving the needles first operated to knit with respect to the positiontaken by a yarn entered upon the leveled needles, and I will nowdescribe one form of such means.

The machine of my said application is so organized that one of a seriesof movable yarn guides F drops into operative position just prior to thepassage down the active face of the stitch cam of the leading longbut'tneedle a, Fig. 3.

Referring now to said Fig. 3, the retracting movement of the needle nbegins upon its encounter with the down-going slope of a stitch cam (notshown) at a point near the vertical plane of the yarn guide F now in theoperative position shown in Fig. 1. A yarn merely supplied to the levelneedles by operatively positioning the yarn guide at any time prior toor during their relative rotation with respect to the" yarn-feedingpoint roughly defined by this plane will lie at a tangent to thecylindrical surface defined by the needles, and in a position too highto be taken by the first and following needles moving down the slope ofthe stitch cam. At a later time, preceding needles which have taken theyarn are moving to a low point with respect to the yarn-feeding level,and the yarn extending from the guide F will then be taken certainly byall the needles, without assistance. a

The machine is provided with any usual internal yarn guide memberpreferably made as an attachment of latch-ring 300, such as that shownat 602, which may comprise a yarn severing device 608, and a yarn clamp606. The free end of the new yarn from a guide F elevated to aninoperative position is held by the clamp 606 prior to its entry uponthe needles when guide F is lowered.

I Upon the plate 602 an upright rigid post 705, Figs. 1 and 2, isprovided, which carries the sleeve 706 having a lug 707 in which is ahorizontal bore 708, to receive an internal needle cam-arm or presser 700, which may be made as a wire arm having a bend 701 to contact withthe needles at apoint in the neighborhood of the vertical plane of theleading end of the active stitch cam. The cam or presser 700 isadjust-ably held in place by a set screw.702. The sleeve 706 is underthe influence of a spring 709 held at one end by the set screw 702 andadjustably held at the other end by a bore 710 in a washer 711 held onthe top of the post 705 by the screw 712. The spring 709, tends toremove the presse'r 700 from the position shown in Figs. 2 and 3 inwhich position it is adjusted to contact with and move a few of theneedles outwardly out of line with the others and substantially intocontact with the inner face of the latch-ring 300, as shown in Fig. 8,in which position the needle hook is well over a yarn entered betweenthe level needles and defining a tangent from the yarn-guide F to thesurface defined by the leveled needles.

The sleeve 706 is provided with a thumb piece 715 and with a lug 716,having a face radial to the post 705 to engage the outer end of astepped latch 717 mounted 011 the same pivot 607 as the yarn clampinglever 606, which latch stands over the lever 606 as shown in Figs. 1 and2. The outer end of,

the latch 717 when in engagement with the radial face of the lug 716will hold the camarm 700 in the described position shown in Figs. 2 and'3, but when the latch 717 is ele-. vated as by lifting the lever 606the sleeve 706 is permitted to rotate through a short distance undertheinfluence of the spring 709 until the lug 716 brings up against the stepin the latch, as shown in Fig. 1.

When the device is in use the operator may set the lug 716 oppositetheend of the lever 717 by means of the thumb piece 715 at the time oflifting the latch-ring, after the machine has stopped and prior to thenormal transfer, without necessitating an extra movement of the hand;When the latch-ring is restored to its normal position after the rib-topor other section has been transferred, all of the needles will beengaged and moved outwardly as shown in Fig. 3 when the machine isrotated and this will continue to occur until the latch 717 has beenmoved.

As shown in Fig. 3, the yarn has been dropped in between needles 12 anda by movement of guide F. The free end of the yarn g which was cut atthe end of the last operation, now rests under. the clamp 606, fromwhich it will be withdrawn by the rotation of the machine acting throughthe needle 02 after the needle it shall have knit. The describedoperation of cam-arm 700 secures the taking of the first loop by theneedle a in the manner explained, although all the needles precedingneedle 11/ remain level until their neXt passage.

The, cam-arm or presser 7.00 is automatically released at any desiredtime follow ing the entrance of the yarn and beginning of knittingin anydesired manner, as by causing the elevation of clamp lever 606 throughthe pattern-controlled connection 460, 611, 608, forming a part ofthemachine improved at a predetermined short interval after the knittingoperation begins.

lVliat-I claim is 7 1. A knitting machine having a series of hookedneedles, a yarn-guide adapted to be moved to operative position to beginknit ting, and means acting on all of the needles to move them laterallyout of lineto the same extent at the yarn-feed point, toplace theirhooks over the yarn at the beginning of knitting. T

2. In a knitting machine having. a series of hooked needles, ayarn-guide adapted to be moved to operative position to begin knitting,and means for retracting the needles to take yarn and knit, means activeat the 2 beginning of knitting to cause all of the needles to beretracted to take yarn while in a position in which their hooked endsare out of line with the other needles of said series.

3-1L knitting machine having a series of hooked needles, a. yarn guideand a device for moving the needles laterally out of line at theyarn-feed point, to place their hooks over the yarn, in combination withmeans torender said device inactive at a predetermined time. a V

4. A knitting machine having in combination a series of needles, meansfor first actuating a predetermined needle to begin knitting, means forfeeding yarn to said needle and others near it, and a device for movingsaid needle out of line with the other needles when it is first actuatedto cause it to take over said yarn.

5. A knitting machine having a yarn guide, needles, and a device forlocally moving a few needles in contact with it out of line in a fixedrelation to the yarn-taking point, to cause the needles when actuated totake over the yarn at the beginning of knitting, in combination withpattern-controlled means for' rendering said device inoperative.

6. A knitting machine having in combination needles, yarn guide meanscomprising a latch-ring, a presser pivotally mounted on a partrelatively fixed with respect to said latch-ring, means to hold saidpresser in operative contact with the needles, and means to release saidholding means.

7 A knitting machine having needles, a latch-ring, an internal yarnguide member normally within the needles, a cam presser for the needlesmounted on said internal yarn guide member, a latch for holding saidpresser in contact with the needles and pattern-controlled means forreleasing said latch.

Signed by me at Boston, Massachusetts, this twelfth day of July 1915.

ROBERT W. SCOTT.-

Witness RUTH A. Borne.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, 10. G.

